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MAX3799 fiches techniques PDF

Maxim Integrated Products - SFP+ Multirate Limiting Amplifier And VCSEL Driver

Numéro de référence MAX3799
Description SFP+ Multirate Limiting Amplifier And VCSEL Driver
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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MAX3799 fiche technique
19-4695; Rev 0; 8/09
www.DataSheet4U.com
1Gbps to 14Gbps, SFP+ Multirate Limiting
Amplifier and VCSEL Driver
General Description
The MAX3799 is a highly integrated limiting amplifier
and VCSEL driver that operates up to 14Gbps, making
it suitable for Ethernet and Fibre Channel applications.
By providing a selectable data path with a noise-shap-
ing filter, the MAX3799 enables a module with 10G
optics to be fully compliant with both 1000BASE-SR
and 10GBASE-SR specifications. Operating from a sin-
gle +3.3V supply, this low-power integrated limiting
amplifier and VCSEL driver IC enables a platform
design for SFP MSA as well as for SFP+ MSA-based
optical transceivers. The high-sensitivity limiting ampli-
fier limits the differential input signal generated by a
transimpedance amplifier into a CML-level differential
output signal. The compact VCSEL driver provides a
modulation and a bias current for a VCSEL diode. The
optical average power is controlled by an average
power control (APC) loop implemented by a controller
that interfaces to the VCSEL driver through a 3-wire
digital interface. All differential I/Os are optimally back-
terminated for a 50Ω transmission line PCB design.
The use of a 3-wire digital interface reduces the pin
count while enabling advanced Rx (rate selection, LOS
threshold, LOS squelch, LOS polarity, CML output level,
signal path polarity, deemphasis, and fast mode-select
change time) and Tx settings (modulation current, bias
current, polarity, and eye safety control) without the
need for external components. The MAX3799 provides
multiple current and voltage DACs to allow the use of
low-cost controller ICs.
The MAX3799 is packaged in a lead-free, 5mm x 5mm,
32-pin TQFN package.
Applications
1000BASE-SR/10GBASE-SR Multirate SFP+
Optical Transceiver
1x/2x/4x/8x/16x SFF/SFP/SFP+ MSA Fibre
Channel (FC) Optical Transceiver
Features
Enables Single-Module Design Compliance with
1000BASE-SR and 10GBASE-SR Specifications
-21.5dBm Optical Sensitivity at 1.25Gbps Using a
10.32Gbps ROSA (-19.7dBm OMA)
Low Power Dissipation of 320mW at 3.3V Power
Supply
Typical Electrical Performance of 14.025Gbps on
Rx/Tx (Non-Retimed 16x Fibre Channel Solution)
3mVP-P Receiver Sensitivity at 10.32Gbps
4psP-P DJ at Receiver Output at 8.5Gbps 8B/10B
4psP-P DJ at Receiver Output at 10.32Gbps
231 - 1 PRBS
26ps Rise and Fall Time at Rx/Tx Output
Rate Select for 1Gbps Mode or 10Gbps Mode
CML Output Squelch
Polarity Select for Rx and Tx
LOS Assert Level Adjustment
LOS Polarity Select
Modulation Current Up to 12mA Into 100Ω
Differential Load
Bias Current Up to 15mA
Integrated Eye Safety Features
3-Wire Digital Interface
Programmable Deemphasis at Tx Output
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX3799ETJ+
-40°C to +85°C
32 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Typical Application Circuit and Pin Configuration appear at
end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.

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